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About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2016
Webmaster:
Kirt Blattenberger,
 BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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Water for the Naive?
Kirt's Cogitations™ #163

These original Kirt's Cogitations™ may be reproduced (no more than 5, please) provided proper credit is given to me, Kirt Blattenberger.

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   Cog·i·ta·tion [koj-i-tey'-shun] – noun: Concerted thought or reflection; meditation; contemplation.
   Kirt [kert] – proper noun: RF Cafe webmaster.

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Water for the Naive?

Americans spend more than $7B per year on bottled water, ranging from 75¢ to $6 per gallon. That's between 120 and 7,500 times the cost of tap water. The Natural Resources Defense Council surveyed 103 brands and found at least 1/4 were just bottled tap water. 1/5 contained synthetic organic chemicals. Amazingly, bottled water is subject to much lower purity standards than bottled; e.g., bottled water is tested once per week for chloroform, whereas municipal systems are tested 100 times per month (typ). In many double-blind tests, >75% of subjects preferred the taste of tap water over bottled. A recent news story reported 2-yr old bottled water in storehouses in France shipping worldwide. "Evian" spelled backwards is "Naive" - a coincidence?